I am hoping that someone can assist me with a problem that I have on a single 500GB drive that was partitioned by "Mythdora" a (now defunct) distribution of Fedora + MythTV. I had this system in use for several years and recently the motherboard died. When I put the hard disk into a different machine it would not boot up (no surprise); however, I also was unable to access the partitions from a Knoppix Live CD (I tried both 5.1 and 7.0). When I tried with Knoppix to mount the partitions I discovered that something is wrong with the partition tables or logical volumes. Here are some examples of the commands that I tried along with the results. Will you please give me some advice about the best way to recover data from sda2 (the recordings)? Thank you in advance! -Tom --------------------------------------------- root@Microknoppix:/# fdisk -l Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x000537fa Device Boot Start End Blocks Id System /dev/sda1 * 63 409662 204800 83 Linux Partition 1 does not start on physical sector boundary. /dev/sda2 409663 976768064 488179201 8e Linux LVM Partition 2 does not start on physical sector boundary. root@Microknoppix:/# parted -l Model: ATA WDC WD5000AADS-1 (scsi) Disk /dev/sda: 500GB Sector size (logical/physical): 512B/4096B Partition Table: msdos Number Start End Size Type File system Flags 1 32.3kB 210MB 210MB primary ext4 boot 2 210MB 500GB 500GB primary lvm Warning: Unable to open /dev/fd0 read-write (Read-only file system). /dev/fd0 has been opened read-only. Error: /dev/fd0: unrecognised disk label Warning: Unable to open /dev/sr0 read-write (Read-only file system). /dev/sr0 has been opened read-only. Error: /dev/sr0: unrecognised disk label Error: /dev/zram0: unrecognised disk label Warning: Unable to open /dev/cloop0 read-write (Read-only file system). /dev/cloop0 has been opened read-only. Error: /dev/cloop0: unrecognised disk label root@Microknoppix:/# gdisk -l /dev/sda GPT fdisk (gdisk) version 0.8.5 Partition table scan: MBR: MBR only BSD: not present APM: not present GPT: not present *************************************************************** Found invalid GPT and valid MBR; converting MBR to GPT format. *************************************************************** Disk /dev/sda: 976773168 sectors, 465.8 GiB Logical sector size: 512 bytes Disk identifier (GUID): E9B4E83E-86F3-4843-801E-495E6864F682 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 976773134 Partitions will be aligned on 8-sector boundaries Total free space is 5099 sectors (2.5 MiB) Number Start (sector) End (sector) Size Code Name 1 63 409662 200.0 MiB 8300 Linux filesystem 2 409663 976768064 465.6 GiB 8E00 Linux LVM root@Microknoppix:/# vgchange -ay /dev/sda2: read failed after 0 of 1024 at 0: Input/output error /dev/sda2: read failed after 0 of 1024 at 4096: Input/output error /dev/sda2: read failed after 0 of 2048 at 0: Input/output error No volume groups found root@Microknoppix:/# lvscan /dev/sda2: read failed after 0 of 1024 at 0: Input/output error /dev/sda2: read failed after 0 of 1024 at 4096: Input/output error /dev/sda2: read failed after 0 of 2048 at 0: Input/output error No volume groups found root@Microknoppix:/# lvm lvdisplay /dev/sda2: read failed after 0 of 1024 at 0: Input/output error /dev/sda2: read failed after 0 of 1024 at 4096: Input/output error /dev/sda2: read failed after 0 of 2048 at 0: Input/output error No volume groups found root@Microknoppix:/# vgscan --mknodes Reading all physical volumes. This may take a while... /dev/sda2: read failed after 0 of 1024 at 0: Input/output error /dev/sda2: read failed after 0 of 1024 at 4096: Input/output error /dev/sda2: read failed after 0 of 2048 at 0: Input/output error No volume groups found No volume groups found root@Microknoppix:/# _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
